CN104420914A - Continuously-adjustable adjustment method and device for valve timing of engine - Google Patents
Continuously-adjustable adjustment method and device for valve timing of engine Download PDFInfo
- Publication number
- CN104420914A CN104420914A CN201310408825.2A CN201310408825A CN104420914A CN 104420914 A CN104420914 A CN 104420914A CN 201310408825 A CN201310408825 A CN 201310408825A CN 104420914 A CN104420914 A CN 104420914A
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- Prior art keywords
- port timing
- piston
- valve
- timing regulator
- oil cylinder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
- F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
- F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a continuously-adjustable adjustment method and device for valve timing of an engine. The method comprises the steps: parallelly connecting a valve timing adjuster into a hydraulic oil circuit between a cam oil cylinder and a valve oil cylinder of a variable gas distribution mechanism of a hydraulic variable cam follower, wherein the valve timing adjuster comprises a valve timing adjuster oil cylinder, a valve timing adjuster piston, a piston resetting device and a limiting device; enabling the piston to always keep a trend of moving towards in the direction of a zero position by a resetting force generated by the piston resetting device, controlling the stroke, from the zero position to the limiting device, of the valve timing adjuster piston, by the limiting device, controlling the volume of oil liquid flowing into the valve timing adjuster oil cylinder, and then, controlling the time when the oil liquid flows into the valve oil cylinder and an effective work duration angle corresponding to the rotation of a cam, thereby realizing the continuous and variable control on valve timing. The method and the device have the advantages that the economical efficiency of fuel oil can be increased, and the power performance and emission reduction performance of the engine are improved.
Description
Technical field
The present invention relates to motor, particularly relate to the continuously adjustable regulating method of a kind of engine air valve lift, also relate to this regulating method device used simultaneously.
Background technique
Motor has different requirements to port timing under different rotating speeds, is one of important technical improved engine combustion conditions, improve fuel economy and minimizing noxious gas emission according to the rotational speed regulation port timing of motor.At present, in variable valve timing technology: class methods are adjustments that the different cam of employing realizes to port timing, and this method can only obtain best port timing under little several specific rotation speeds, exist and can not realize the shortcomings such as the continuous adjustment of phase place.Another kind of method is the adjustment realizing port timing by the relative angle changed between camshaft and bent axle, if these class methods exist when increasing advance angle will reduce retardation angle, reduce advance angle and then must increase retardation angle, the increase and decrease that can not meet with engine speed increases valve advance angle and retardation angle or the shortcoming such as the adjustment requirement that simultaneously reduces simultaneously.Class methods adopt hydraulic valve again, and the hydraulic circuit utilizing solenoid valve or other hydrovalves to control driving valve realizes the adjustment to port timing, there is the shortcomings such as need configure more solenoid valve or other hydrovalves, structure and control is complicated, magnetic valve high frequency response performance is not good enough in these class methods.Because above-mentioned variable valve timing technology exists many defects, the motor making to be configured with variable valve timing system is to the improvement DeGrain of fuel economy and noxious gas emission index.Current most of motor does not all configure variable valve timing device, and fuel economy and the noxious gas emission index of motor are all poor.
Summary of the invention
The object of the present invention is to provide a kind of raising fuel economy, improve the power character of motor and the continuously adjustable regulating method of gas distribution phase of engine of reduction of discharging property.
Another object of the present invention is to provide this gas distribution phase of engine continuously adjustable controlling device.
Object of the present invention and solve its technical problem underlying and realize by the following technical solutions:
The continuously adjustable regulating method of gas distribution phase of engine of the present invention, comprising:
(1) at the cam oil cylinder of the variable valve actuating mechanism of a hydraulic type variable cam driven member port timing regulator in parallel with the hydraulic circuit between valve oil cylinder;
(2) port timing regulator comprises port timing regulator oil cylinder, port timing regulator piston, piston return device and limit stoper, the returning place force produced by piston return device makes piston remain the trend of moving to zero-bit direction, the stroke of port timing regulator piston between zero-bit to limit stoper is controlled by limit stoper, control the fluid volume flowing into port timing regulator oil cylinder, and then control the moment that fluid flows into valve oil cylinder and the effective operation duration angle corresponded to when cam rotates thereof, realize port timing continuous variable and control; Wherein: the oil pressure corresponding to returning place force when piston return power when port timing regulator piston is in zero-bit and port timing regulator piston reach maximum range-adjustable is all less than hydraulic system and overcomes valve spring pretightening force and the oil pressure opened corresponding to valve.
The continuously adjustable regulating method of above-mentioned gas distribution phase of engine, wherein: hydraulic circuit is provided with recharging oil device, its oil pressure be less than system overcome piston return power when port timing regulator piston is in zero-bit and make port timing regulator piston move corresponding to oil pressure.
The continuously adjustable regulating method of above-mentioned gas distribution phase of engine, wherein: piston return device is that hydraulic pressure installation, pneumatic shuttle, calutron are or/and spring etc.
The continuously adjustable regulating method of above-mentioned gas distribution phase of engine, wherein: limit stoper is position-limited lever, limiting stopper or stop collar etc.
The continuously adjustable controlling device of gas distribution phase of engine of the present invention, comprise cam, valve, hydraulic system is provided with between cam and valve, wherein: a port timing regulator in parallel in the hydraulic circuit between cam oil cylinder with valve oil cylinder, port timing regulator comprises port timing regulator oil cylinder, port timing regulator piston, port timing spring for governor, port timing regulator position-limited lever, port timing regulator piston is positioned at port timing regulator oil cylinder, the piston rear end of port timing regulator is provided with port timing spring for governor and position-limited lever.
The continuously adjustable controlling device of above-mentioned gas distribution phase of engine, wherein: hydraulic system overcomes the active force of port timing spring for governor when port timing spring for governor pretightening force and port timing regulator piston reach maximum range-adjustable and the oil pressure promoted corresponding to the motion of port timing regulator piston and is all less than hydraulic system and overcomes valve spring pretightening force and the oil pressure opened corresponding to valve.
The continuously adjustable controlling device of above-mentioned gas distribution phase of engine, wherein: spring can by mode equivalent substitutions such as the combinations at port timing regulator piston back cavity introducing pressure oil or introducing pressure oil and spring.
The present invention compared with prior art has obvious advantage and beneficial effect.From above technological scheme, the present invention adopts hydraulic volume regulating type regulating method.Make motor can obtain suitable port timing at various speeds, improve intake and exhaust condition, prevent waste gas from flowing backwards, reduce useful work loss, improve the combustion efficiency of fuel oil, reduce noxious gas emission, improve engine performance; Adopt volumetric void fraction, control accurately, regulate simply; Port timing regulation range is wide, can under the various rotating speed of motor continuous setup, greatly improve and improve the power character of motor, Economy and emission performance; For under the rotating speed that motor is certain, port timing regulator only need carry out the position regulation of corresponding position-limited lever, system can carry out self adaption running automatically, without the need to carrying out high frequency, adjustment action repeatedly for each circulation of motor, there is good system self-adaptability and dynamic response characteristic; The port timing regulator of all intake valves of motor and exhaust valve, can share a set of erecting device, a set of spacing driving-controlling device, and structure is simple, and integration is good, good economy performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Mark in figure:
1, cam; 2, valve; 3, hydraulic system; 4, cam oil cylinder; 5, valve oil cylinder; 6, hydraulic circuit; 7, port timing regulator; 8, port timing regulator oil cylinder; 9, port timing regulator piston; 10, port timing spring for governor; 11, port timing regulator position-limited lever; 12, valve spring; 13, cam oil cylinder piston; 14, valve oil cylinder piston.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to according to the specific embodiment of the present invention, structure, feature and effect thereof, be described in detail as follows.
embodiment 1
The continuously adjustable regulating method of a kind of gas distribution phase of engine, comprising:
(1) at the cam oil cylinder of the variable valve actuating mechanism of a hydraulic type variable cam driven member port timing regulator in parallel with the hydraulic circuit between valve oil cylinder;
(2) port timing regulator comprises port timing regulator oil cylinder, port timing regulator piston, piston return device and limit stoper, the returning place force produced by piston return device makes piston remain the trend of moving to zero-bit (port timing regulator oil cylinder volume is the position of zero) direction, the stroke of port timing regulator piston between zero-bit to limit stoper is controlled by limit stoper, control the fluid volume flowing into port timing regulator oil cylinder, and then control the moment that fluid flows into valve oil cylinder and the effective operation duration angle corresponded to when cam rotates thereof, realize port timing continuous variable to control, wherein: the oil pressure corresponding to returning place force when piston return power when port timing regulator piston is in zero-bit and port timing regulator piston reach maximum range-adjustable is all less than hydraulic system and overcomes valve spring pretightening force and the oil pressure opened corresponding to valve.
Hydraulic circuit is provided with recharging oil device, its oil pressure be less than system overcome piston return power when port timing regulator piston is in zero-bit and make port timing regulator piston move corresponding to oil pressure.
Piston return device is that hydraulic pressure installation, pneumatic shuttle, calutron are or/and spring etc.
Limit stoper is position-limited lever, limiting stopper or stop collar etc.
embodiment 2
The continuously adjustable controlling device of a kind of gas distribution phase of engine, comprise cam 1, valve 2, hydraulic system 3 is provided with between cam 1 and valve 2, wherein: a port timing regulator 7 in parallel in the hydraulic circuit 6 between cam oil cylinder 4 with valve oil cylinder 5, port timing regulator 7 comprises port timing regulator oil cylinder 8, port timing regulator piston 9, port timing spring for governor 10, port timing regulator position-limited lever 11, port timing regulator piston 9 is positioned at port timing regulator oil cylinder 8, port timing regulator piston 9 rear end is provided with port timing spring for governor 10 and port timing regulator position-limited lever 11.
Hydraulic system overcomes the active force of the port timing spring for governor 10 when port timing spring for governor 10 pretightening force and port timing regulator piston 9 reach maximum range-adjustable and promotes the port timing regulator piston 9 corresponding oil pressure that moves and be all less than hydraulic system and overcome valve spring 12 pretightening force and the oil pressure opened corresponding to valve 2.
Port timing spring for governor 10 can by mode equivalent substitutions such as the combinations at port timing regulator piston 9 back cavity introducing pressure oil or introducing pressure oil and spring.
Working procedure is as follows:
Port timing regulator piston 9, when cam oil cylinder piston 13 rear end and cam 1 touching position are cam base circle, is in zero-bit (port timing regulator oil cylinder 8 volume is the position of zero) under the effect of port timing spring for governor 10 spring force (returning place force).Regulate the position of port timing regulator position-limited lever 11 just can control the stroke of port timing regulator piston 9 between zero-bit to limit stoper, thus control the fluid volume flowing into port timing regulator oil cylinder 8, and then controlling the moment that fluid flows into valve oil cylinder 5 and the effective operation duration angle corresponded to when cam 1 rotates thereof, final realization controls port timing.
When motor is in maximum speed running, be adjusted to by port timing regulator position-limited lever 11 and be zero with the gap of port timing regulator piston 9 rear end and promote port timing regulator piston 9 to zero-bit, then the fluid volume that can flow into port timing regulator 7 is zero.When cam 1 is in lift, under the effect of cam oil cylinder piston 13, Hydraulic System Oil voltage rise is high, when oil pressure be increased to systemic effect be greater than valve spring 12 pretightening force in the power of valve oil cylinder piston 14 time, hydraulic oil flows into valve oil cylinder 5 and promotes valve oil cylinder piston 14 valve 1 simultaneously that moves and to open and aperture continues to increase until cam 1 lift terminates.When cam 1 is in backhaul, valve 2 falls after rise under the effect of valve spring 12, and fluid refluxes to cam oil cylinder 4, and simultaneously oil pressure reduces, when oil pressure be reduced to systemic effect be less than valve spring 12 pretightening force in the power of valve oil cylinder piston 14 time, valve 2 is closed.As mentioned above, in this process, fluid flows into the moment of valve oil cylinder 5 the earliest, and the moment that fluid all flows out from valve oil cylinder 5, port timing obtained full aduance, maximum retardation angle and maximum effective operation duration angle the latest.
When motor is in minimum speed running, being adjusted to the gap of port timing regulator piston 9 rear end by port timing regulator position-limited lever 11 is the maximum value of its regulation range, then the fluid volume that can flow into port timing regulator 7 is maximum.When cam 1 is in lift, under the effect of cam oil cylinder piston 14, Hydraulic System Oil voltage rise is high, when oil pressure be increased to systemic effect be greater than port timing spring for governor 10 pretightening force in the power of port timing regulator piston 9 time, port timing regulator piston 9 setting in motion, hydraulic oil first flows into port timing regulator oil cylinder 8 and the volume flowed into continues to increase until port timing regulator piston 9 rear end contacts with port timing regulator position-limited lever 11.Port timing regulator piston 9 is moved and is stopped rear system oil pressure to raise further, when oil pressure be increased to systemic effect be greater than valve spring 12 pretightening force in the power of valve oil cylinder piston 14 time, hydraulic oil just starts to flow into valve oil cylinder 5 to be promoted valve oil cylinder piston 14 valve 2 simultaneously that moves and to open and aperture continues to increase until cam 1 lift terminates.When cam 1 is in backhaul, first valve 2 falls after rise under the effect of valve spring 12, and fluid refluxes to cam oil cylinder 4, and simultaneously oil pressure reduces, when oil pressure be reduced to systemic effect be less than valve spring 12 pretightening force in the power of valve oil cylinder piston 14 time, valve 2 is closed.After valve 2 is closed, the fluid in port timing regulator 7 also refluxes until port timing regulator piston 9 gets back to zero-bit to cam oil cylinder 4 in beginning under the effect of port timing spring for governor power.As mentioned above, in this process, fluid flows into the moment of valve oil cylinder 5 the latest, and the moment that fluid all flows out from valve oil cylinder 5, port timing obtained minimum advance angle, minimum lag angle and minimum effective operation duration angle the earliest.
When motor be in operate between the highest and minimum speed time, the position-limited lever of port timing regulator is adjusted to reasonable value by the working condition according to motor, and system can obtain rational advance angle, retardation angle and effective operation duration angle.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. the continuously adjustable regulating method of gas distribution phase of engine, comprising:
(1) at the cam oil cylinder of the variable valve actuating mechanism of a hydraulic type variable cam driven member port timing regulator in parallel with the hydraulic circuit between valve oil cylinder;
(2) port timing regulator comprises port timing regulator oil cylinder, port timing regulator piston, piston return device and limit stoper, the returning place force produced by piston return device makes piston remain the trend of moving to zero-bit direction, the stroke of port timing regulator piston between zero-bit to limit stoper is controlled by limit stoper, control the fluid volume flowing into port timing regulator oil cylinder, and then control the moment that fluid flows into valve oil cylinder and the effective operation duration angle corresponded to when cam rotates thereof, realize port timing continuous variable and control.
2. the continuously adjustable regulating method of gas distribution phase of engine as claimed in claim 1, is characterized in that: the oil pressure corresponding to returning place force when piston return power when port timing regulator piston is in zero-bit and port timing regulator piston 9 reach maximum range-adjustable is all less than hydraulic system and overcomes valve spring pretightening force and the oil pressure opened corresponding to valve.
3. the continuously adjustable regulating method of gas distribution phase of engine as claimed in claim 1 or 2, it is characterized in that: hydraulic circuit is provided with recharging oil device, its oil pressure be less than system overcome piston return power when port timing regulator piston is in zero-bit and make port timing regulator piston move corresponding to oil pressure.
4. the continuously adjustable regulating method of gas distribution phase of engine as claimed in claim 3, is characterized in that: piston return device is that hydraulic pressure installation, pneumatic shuttle, calutron are or/and spring.
5. the continuously adjustable regulating method of gas distribution phase of engine as claimed in claim 4, is characterized in that: limit stoper is position-limited lever, limiting stopper or stop collar.
6. the continuously adjustable controlling device of gas distribution phase of engine, comprise cam (1), valve (2), hydraulic system (3) is provided with between cam (1) and valve (2), it is characterized in that: a port timing regulator (7) in parallel in the hydraulic circuit (6) between cam oil cylinder (4) with valve oil cylinder (5), port timing regulator (7) comprises port timing regulator oil cylinder (8), port timing regulator piston (9), port timing spring for governor (10), port timing regulator position-limited lever (11), port timing regulator piston (9) is positioned at port timing regulator oil cylinder (8), port timing regulator piston (9) rear end is provided with port timing spring for governor (10) and port timing regulator position-limited lever (11).
7. the continuously adjustable controlling device of gas distribution phase of engine as claimed in claim 6, is characterized in that: hydraulic system overcomes the active force of the port timing spring for governor (10) when port timing spring for governor (10) pretightening force and port timing regulator piston (9) reach maximum range-adjustable and the oil pressure promoted corresponding to port timing regulator piston (9) motion and is all less than hydraulic system and overcomes valve spring (12) pretightening force and the oil pressure opened corresponding to valve (2).
8. the continuously adjustable controlling device of gas distribution phase of engine as claimed in claims 6 or 7, is characterized in that: port timing spring for governor (10) can by introducing pressure oil at port timing regulator piston (9) back cavity or introducing the compound mode equivalent substitution of pressure oil and spring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408825.2A CN104420914A (en) | 2013-09-10 | 2013-09-10 | Continuously-adjustable adjustment method and device for valve timing of engine |
| PCT/CN2014/084975 WO2015035858A1 (en) | 2013-09-10 | 2014-08-22 | Method and apparatus for regulating continuously variable valve timing of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310408825.2A CN104420914A (en) | 2013-09-10 | 2013-09-10 | Continuously-adjustable adjustment method and device for valve timing of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104420914A true CN104420914A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310408825.2A Pending CN104420914A (en) | 2013-09-10 | 2013-09-10 | Continuously-adjustable adjustment method and device for valve timing of engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104420914A (en) |
| WO (1) | WO2015035858A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089731A (en) * | 2015-09-08 | 2015-11-25 | 朱志超 | Valve transmission set capable of achieving stepless variable valve lift and variable valve timing |
| CN105781663A (en) * | 2016-05-04 | 2016-07-20 | 哈尔滨工程大学 | Double-electromagnetism hydraulic-driving boosting-type air distribution system |
| CN108506063A (en) * | 2018-03-05 | 2018-09-07 | 中国北方发动机研究所(天津) | A kind of two or four stroke hydraulic variable valve mechanism of no valve spring engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1323793A (en) * | 1970-03-19 | 1973-07-18 | Hausknecht L A | Hydraulic valve control system |
| US4466390A (en) * | 1981-09-09 | 1984-08-21 | Robert Bosch Gmbh | Electro-hydraulic valve control system for internal combustion engine valves |
| US6886511B1 (en) * | 2004-04-07 | 2005-05-03 | General Motors Corporation | Lost motion assembly for a poppet valve of an internal combustion engine |
| CN101270693A (en) * | 2002-04-08 | 2008-09-24 | 柴油发动机减震器有限公司 | Compact lost motion system for variable valve actuation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160019A (en) * | 1983-03-01 | 1984-09-10 | Mitsubishi Heavy Ind Ltd | Hydraulic valve gear |
| DE3807699A1 (en) * | 1988-03-09 | 1989-09-21 | Audi Ag | Adjustable hydraulic valve timing gear |
| ITTO20010660A1 (en) * | 2001-07-06 | 2003-01-06 | Fiat Ricerche | MULTI-CYLINDER DIESEL ENGINE WITH VARIABLE VALVE OPERATION. |
| US20090308340A1 (en) * | 2008-06-11 | 2009-12-17 | Gm Global Technology Operations, Inc. | Cam-Driven Hydraulic Lost-Motion Mechanisms for Overhead Cam and Overhead Valve Valvetrains |
-
2013
- 2013-09-10 CN CN201310408825.2A patent/CN104420914A/en active Pending
-
2014
- 2014-08-22 WO PCT/CN2014/084975 patent/WO2015035858A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1323793A (en) * | 1970-03-19 | 1973-07-18 | Hausknecht L A | Hydraulic valve control system |
| US4466390A (en) * | 1981-09-09 | 1984-08-21 | Robert Bosch Gmbh | Electro-hydraulic valve control system for internal combustion engine valves |
| CN101270693A (en) * | 2002-04-08 | 2008-09-24 | 柴油发动机减震器有限公司 | Compact lost motion system for variable valve actuation |
| US6886511B1 (en) * | 2004-04-07 | 2005-05-03 | General Motors Corporation | Lost motion assembly for a poppet valve of an internal combustion engine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089731A (en) * | 2015-09-08 | 2015-11-25 | 朱志超 | Valve transmission set capable of achieving stepless variable valve lift and variable valve timing |
| CN105089731B (en) * | 2015-09-08 | 2017-12-08 | 朱志超 | The valve train group of electrodeless lift range variable and VVT can be achieved |
| CN105781663A (en) * | 2016-05-04 | 2016-07-20 | 哈尔滨工程大学 | Double-electromagnetism hydraulic-driving boosting-type air distribution system |
| CN105781663B (en) * | 2016-05-04 | 2018-07-24 | 哈尔滨工程大学 | Double electromagnetic hydraulic pressures drive booster-type air distribution system |
| CN108506063A (en) * | 2018-03-05 | 2018-09-07 | 中国北方发动机研究所(天津) | A kind of two or four stroke hydraulic variable valve mechanism of no valve spring engine |
| CN108506063B (en) * | 2018-03-05 | 2019-10-25 | 中国北方发动机研究所(天津) | A kind of two or four stroke hydraulic variable valve mechanism of no valve spring engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015035858A1 (en) | 2015-03-19 |
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Application publication date: 20150318 |
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